LB-300 is a smart companion for NuDOG-301 that enhances DUT functional tests for measurement test of network environments. LB-300 that fulfills the test by one network link is a good solution for loopback test in network environment. LB-300 filters out broadcast, multicast and null DA (Destination Address) packets and resends the rest of incoming packets back to the same network cable by two selective methods; resends directly (Layer 1 Loopback) or resends with switched DA/SA (Destination/Source MAC Address) and recalculated CRC for different applications (Layer 2 Loopback) of the test. For fixed network provider, Telecom and ISP Company, LB-300 and NuDOG-301 are suitable to test the throughput and latency performance of leased line or ADSL. Both LB-300 and NuDOG-301 act as packet generator that is located at CO and CPE side for packets transmission and receiving. The distance and cable quality is the key factor that affects the transmission bandwidth of ADSL and leased line. The bandwidth is not guaranteed even though the bandwidth allowed is configured at central office. By a pair of LB-300 and NuDOG-301, technical personnel can test and realize the maximum downstream and upstream bandwidth available of the transmission media, such as ADSL by telephone line or wireless transmission for public service. The solution can verify if the transmission bandwidth meets the requirement that customer applied, or realize the maximum available bandwidth of the leased line or ADSL network if bandwidth from central office is unlimited. With this affordable price and excellent functions for network measurement and test on-site, LB-300 and NuDOG-301 are one simple yet effective solution for data transmission test in cable wiring phase or troubleshooting phase for both WAN and LAN.

FEATURES

● Support Round Trip (loopback) and End-to-End (bi-directional symmetric/asymmetric) test mode when LB-300 works with NuDOG-301 ● As a loopback client that returns incoming test streams for loopback (round trip) test ● As a packet generator for bi-directional symmetric/asymmetric (End-to-End) network test ● Software utility DApps-2544 of NuDOG-301 can remote control the test for both NuDOG-301 and remote LB-300 ● Test loopback, throughput and latency function when connected ● Handheld device embedded with built-in high capability NI-HM battery which can be charge by USB ● Distinctive LED indicators are able to pinpoint the status of current running network.

SPECIFICATIONS

Supported Frame Format

● Ethernet II frame

● IEEE 802.3 frame

Interface Ports

Left Side

Right Side

● 10/100/1000 Mbps UTP Ethernet Port × 1(10/100 Mbps

Half/Full Duplex, 1000 Mbps

Full Duplex)

● USB Port

(Mini-USB Connector) × 1

● Power Switch × 1

Throughput Test

● Throughput result for frame length, 64/128/256/512/768/

1024/1518 bytes, steps by steps, or configuration in specified range by user

● Throughput result according to user defined packet loss

tolerance in percentage

● Throughput result in percentage that is based on 100 Mbps utilization

● Throughput result in FPS (frame per second)

Latency Test

● Latency test for frame length, 64/128/256/512/768/1024

/1518 bytes, steps by steps, or configuration in specified

range by user

● Latency test result according to user defined utilization in

percentage

● Average Latency in us(microsecond)

● Test result according to 2 definitions of RFC2544, Store

and Forward, and Cut Through.

Dimension

141 mm x 22 mm x 22 mm

Temperature

Operating: 0oC~ 40oC

(32oF~ 104oF)

Storage: 0oC~ 50oC

(32oF~ 122oF)

Humidity

Operating: 0% ~ 85% RH

Storage: 0% ~ 85% RH

Power Source

Two built-in 3.7V NI-MH batteries which can be recharged via LB-300's Mini-USB Port while connected with PC